Spring-protector and shock-absorber.



I R. P. & W. H. GLARK. SPRING PROTECTOR AND SHOCK ABSORBBB.

APPLICATION FILED DEC. 23. 1911.

Patented July 16, 1912;

' ROBERT-1,jCLARK linnwrnnmmin, manner rnnsno, ozinrronn mp s enmernorncron AND snocx-nrssonnnn.

Specification or Letters Batent.

irate tea July 16, 1912.

' Applic ation filed December 23, 1911. Serial No. 661456.

To all whom it may "comer ran Bea known that we, Ro e n ohm;

United States, residing at Fresno, in 'the county. of Fresno and' State of California,

. have; invented, c'ertainnew and fuseful 1m proveinentsin Spring-Protectors and Shock-- Absorbers, of which the following is a speci-f ber of parts.

"With these" obj (acts in View, our invention comprises a-stifl jbar ofmetal in combination with a. semi-elliptic or elliptic spring arid "spring 'are'secured to 'the axle in con nrade u of superimposed leaves, which bar nection with links pivot-ally connected to the l '1 outer end of the -bar and embracing'the andcar'rying rubber rollers whereby.

- selves to the. co'nditionof depression of the,

the links. and rollers by gravity adapttheme "ends of the-springwhich' results in makin and. the space betweentheirends, in which:

strained upward vibration ofthes'pri'ng,

From the foregoing it will be .seen that the-rigid steel. bar presents a perfect seat 90 spring having lessleaves canbe used, and

, variable due to the oscillation of-the' link'sp Another feature of; which the invention the --rebound' gradual as contradistinguishe from a sudden, sharp re-action which would otherwise take place. if theflinksjwere rigid the spring operates, were constant instead of consists is' ,in elastic bumpers arranged .inter acent the barjand'sprin Our invention still further consists inacertain novel features of c on struetion andcom binations'of parts which willxbe hereinafter described and pointed'out in the claims,

In the accompanying drawings :F igure': 1 is a view'jin'perspectivejof our/spring complete, Fig. 2 is aview of the bar, links,

' and bumpers, the semi-elliptic springbeing' removed, and Figs. 3,4, 5', ,6, and 7. are details.

- A is a stili bar ofsteelse'eured ator near itsv center to the axle, and; B is a, semielliptic spring held'bymeans of clips to the .bar A. i v Links 4:, 4,. are pivotally connectedvnthv I the outer ends of 'the bar by means of a bolt .7 and they are connected. at. their ,n-e

ends-by means of another bolt 7 oniwhich,

is mounted the -r0ller 5, which turns preferably on a bronze bushing 6, through the 'center (if-which bushing the bolt 7 passes. a

The rubber bumpers 2, 2, are held by' means of steel clips 3, 3, in placev on the, upper surface ofgthe bar at or near the ends of the latter in positionso that thespring, whennot loaded,1rests'or bears very lightly upon these bumpers .2, 2, the; object of the I bumpers being to catch the jar of the spring as it goes down and. prevent .b'reakage.- In 0perati0n,'the rollers 5, 5,-will always elear the lowest point on the; spring, so when spring 'straightens out under loadsor-strain, the rollers will move toward the lcenterof the spring, and When-the spring rebounds th'efirollers will roll back toward the ends of the spring, thereby checking the rebound. This keeps the, "rollers in' continuous motion while the spring is .i'n'use, -the'l1jnkscarrying the rollers being caused to @jOsCillate with the rebound of the spring. Thus the springsare. confined. between yielding devices at all times, namely. the

above, form) matter how far the o-uterends bumpers beneath" and the .rubber rollers I i of jthefispring are depressed,- the-rollers maintain a roll-ing contact withthe springs,v

; thus gradually taking-rare of the reaction and excluding sudden. and violent reactionany joltswhich would resultfrom links and rollers constructed .soas' to allow unref for thespring, and that'in consequence a at thev same time insuring greatly-reduced liability of' breakage,

links, the'rollers' 5, 5, workjfreely upon the spring, -making .them' self-adjusting with I B-yreason of-the vbackward and forward movement of the the movement of the spring, and as -stated:--

thereby ohecking the rebound of thefsprin'g" parts described without departing. from the.

spirit and scope of our invention, and hence we do not .wish to be limited to the precise 'mg our invention,

construction herein described, but':-I

Having fully described what We'claim as newand desire to secure by Letters Patent,,is

sorber, the combination with a rigid bar 15111, P in .Pi'otc'ector and shock aband a leaf secureflgg eptrally thereof, of links pivotally connected with the outer ends of thg bar and emb acing the sides of the spring and carrying I'QHGIS which bear sti fi bar of metal secured together at or near their centers, of links pivotally connected with the' outer endspf th bar, and embracing the atlas 0f the .s prmg, alyelasmc .UHGE heated. upon the ipp'er SE11"? In test nony wharmfwe afiri 01m signatures, in tha presence 65 two Witnesses.

ROBERT P. CLARK. WILLIAM H. QLAREI. v v Vitaessesz f 195mm wimp H. LINVILLE,

R. Hhwrms M mg and "LmVeh-ngback and farth them-0n s the we gfma sustained by fihe spmng rises; 

